Combined typewriting and computing machine



n 1929- A. G. KUPETZ COMBINED TYPEWRITING AND COMPUTING MACHINE Filed May 5, 1926 4 Sheets-Sheet 1 June 4, 1929. u -rz 1,715,609

COMBINED TYPEWRITING AND COMPUTING MACHINE Filed May 5, 1926 4 Sheets-Sheet 2 A ffar i June 4, 1929. KUPETZ COMBINED TYPEWRITING AND COMPUTING MACHINE Filed May 5, 1926 4 Sheets-Sheet 3 II.. =1 i ii...

June 4, 1929. A. G. KUPETZ COMBINED TYPEWRITING AND COMPUTING MACHINE Filed May 1926 4 Sheets-Sheet 4 //7 [/6/7 far A 7 far/7 a;

, M R w k Patented June 4, 1929.

UNITED STATES PATENT OFFICE.

ADOLPH G. KUPETZ, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO ELLIOTT-FISHER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

COMBINED TYPEWRITIN G AND COMPUTING MACHINE.

Application filed Kay 5, 1926. Serial No. 106,794.

This invention relates to combined typewriting and computing machines, and more particularly to the kind known as the Underwood-Hanson bookkeeping machine disclosed in the following patents: Hanson No. 1,278,812, Minton No. 1,280,065, and Thornton N 0. 1,288,360.

The Underwood-Hanson typewriting and computing machine is provided with a computing" mechanism, which is normally effective to add the typed amount into a computing register. The type-keys of the typewriter set up pins in pin-carrying members which are associated wit-h denominational Wheelsin the register. The pin-carrying members are automatically moved to setting positions, one at a time, as the carriage travels, and after setting the pins, all the pin-carrying members are advanced corresponding amounts by means of a general operator.

The machine is also provided with a subtracting mechanism of the complementary type, which, as is well known, involves the setting of complementary amounts in the pin-carrying members, and also the addition of an extra unit into the dial-wheel of lowest denominational order.

According to certain features of this invention, mechanism is provided whereby the machine may be readily used for certain special classes of work, such as, for instance, the counting and recording: of consecutively numbered coupons or dividend warrants.

' Usually, these coupons are arranged in stacks in numerical order, the coupons of the smallest and largest denominations being respectively placed at the top and bottom of the stack. One of the difficulties en countered in performing this class of work is that the number of coupons in a stack is one more than the difference between the largest and smallest numbers on the coupons. This computation cannot therefore be performed in an ordinary machine, for

the reason that it involves the subtraction of the smaller number from the larger, and then the automatic additionof one unit to the remainder.

In order to facilitate'the handling of the work by this invention, there is provided a work-sheet having three columns appropriate for one register. The work-sheet is first positioned to receive typing on the first column thereof, and the machine is automatically set for substraction. The number indicating the coupon of asmaller denomination is typed in this column, and the typed amount is subtracted from a clear register. Then the carriage is tabulated to the second column upon which the number indicating the coupon of largest denomination is typed, and the amount is added into the register. It will be understood that when the largest amount is typed, the machine is not only set for addition, but is also set to automatically add one unit into the register, so that when the carriage is tabulated to the third column in which the machine is again automatically set for subtraction, the amount shown by the register may be copied, and at the same time clear the register to make it ready for the next computation.

In the Underwood-Hanson machine there is provided a complement bar, which is used to correct the inherent mathematical error of one unit in the complementary method of subtraction. Said complement bar is provided with a settable slide having a lateral extension, which extension co-operates with the pin-carrying member of lowest denomination, to cause said complement bar to actuate the pin-carrying member one step in advance of the general operator. The complement bar in the present invention is provided with mechanism for setting said slide when the machine is set for addition, thus causing the extra unit to be added into the register during an adding operation. To this end, the complement bar is constructed so that it may be set by any one of the numeralkeys, in addition to being set-table by the usual 9 pin-setting bail when subtracting.

The usual denominational selecting mechanism associated with the computing bars to actuate them individually to setting positions is provided with means to cause the complement bar to be moved to its setting position upon actuation of any one of the pin-carrying members. Said means may inelude a universal bar, which is associated with the usual transposition device of the denominational selecting mechanism, said universal bar being actuable by any one of the transposition devices, and being provided with means for moving the complethe transposition devices from the complement bar. Said key is locked in its operating position by means of a latch, which is automatically released upon cycling the general operator, and, upon releasing the key, the mechanism is automaticallyv restored to subtraction.

' Another feature of this invention relates to means for locking the complement bar in its ineffective position when the machine is set for addition, and thus prevent the automatic addition of an extra unit into the register. To this end, there is provided a latch for locking the finger-piece controlling the locking means in a manner to hold the fingerpiece indefinitely in its operative position untilflitis desired to reconvert the register to coupon work.

In order to reconvert the register to com pon work, there is provided a second fingerpiece for actuating the latch and thus permitting the first-mentioned finger-piece to be restored to its normal position in a manner to reconnect the complement bauwith the denominational selecting mechanism. It may happen, however, that the typist may decide to reconvert the register from coupon to straight adding work after the carriage has entered the computing zone, in which case safeguards must be provided to prevent straining the means for connecting the selecting mechanism and the complement bar.

Accordingly, provision is made to advance the complement bar slightly during the conversion of said register, so as to permit the easy engagement of the operating means with the complement bar.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a sectional view in elevation of the computing mechanism of an Underwood-Hanson machine, showing some of the typewriting mechanism associated therewith.

Figure 2 is a fragmentary side view showing the subtraction-setting slide in its normal position.

Figure 3 is a perspective view showing the extra unit device on the complement bar, and the associated keys and intermediate mechanism for rendering said device ineffective.

Figure 4 is a detail side View of the extra unit device.

Figure 5 is a detail side view of the complement bar and its associated extra unit device.

Figure 6 is a fragmentary plan view, partly in cross-section, of the computing mechanism. I

Figure 7 is a detail front view showing the handle by which the register may be set for .coupon work or straight adding work.

Figure 8 is a detail sectional front view taken on the line 88 of Figure 1, and showing disconnecting means between the denomination-selectingmechanism and the complement bar. p

Figure 9 is a diagrammatic side view showing the complement bar actuated concomitantly with one of the computing bars by the denomination-selecting mechanism.

Figure 10 is a diagrammatic view showing the relative position of the complement bar and the adjacent computing bar, the general operator being shown in its actuating position.

Figure 11 is a detail front view showing the denomination-selecting mechanism disconnected from the complement bar, and a latch for holdingthe mechanism in its effective position.

Fi ure12 is a diagrammatic side view showing the denomination-selecting mechanism disconnected from the complement bar, one of the pin-bars being illustrated in its pin-setting position.

Figure 13 is a view similar to Figure 12, but shows the complement bar automatically advanced to facilitate the shifting of the denominational selecting bail into engagement with the complement bar. I

Figure 14 is a diagrammatic view of a work-sheet intended for recording the computations made in the machine.

The Underwood-Hanson machine is provided with the usual traveling bar 20 upon which there are pivotally mounted aseries of tappets 21, which, while normally held in their ineffective positions, are automatically elevatable to effective positions when engaging relatively fixed zone-controlling rollers 22. The tappets 21 carry camming dogs 23, which dogs are pivotally mounted on said tappets and are effective to rock levers 24 pivotally mounted at 25. Each of the levers 24 depresses a link 26 associated with an arm 27 mounted on a supporting shaft 28, and, by means of transposlng devices 29, forces a pin-carrying member or bar 30 to setting position. These pin-carrying members are provided with a series of pins 31 slidably mounted thereon, which pins are designed to be depressed by means of pin-setting linkage bars 32 operated by intervening links 33 to numeral-keys 34.

Normally the computing mechanism is set for addition, in which case each. of the numeral-keys-34 actuates a corresponding pin 31 on the pin-carrying member 30, which has been moved to setting position. In this case, when a general operator 35 is moved forwardly, a cross-bar 36 carried by said general operator engages the depressed pins so as to carry all the bars forwardly to register amounts equal to the denomination of the depressed keys.

\Vhen it is desired to subtract an amount from the register, a subtraction-key 37 is actuated in a manner to swing a shaft 38, and thereby disengage a pawl 39 (Figure 2) from a subtraction-setting bar 40, which is moved rearwardly by a co-operating spring 41. Said bar 40 is effective to transpose the bars 32 so as to actuate the pins 31 to therebyeffect a setting of a complementary amount in the pin-carrying members. The transposing of said bars is accomplished by means of a lever 42 rockably mounted on a shaft 43 and engaging with a pin 44 carried by the bar 40. The shaft 43 is in turn provided with an arm 45, which engages a pin 46 carried by an arm 47 mounted on a bail 48. This mechanism is particularly shown in Figure 2.

As is well known, the complementary form of subtraction involves the addition of an extra unit into the register, and to this end the machine is provided with an auxiliary or complement bar 49, which is placed alongside the pin-carrying member of lowest denomination. Said complement bar is normally ineffective, but is automatically set to advance the pin-carrying member of lowest denomination one space upon actuation of the general operator. This setting is accomplished by means of a bail 50, which is swung downwardly upon the release of the subtraction bar 40. Said bail 50 engages a plate 51 at 52 (Figures 1, 4, 10 and 12) and forces the plate downwardly from the position shown in Figure 12 to that shown in Figure 10. It will be seen that when the plate is lowered to its effective position, a heel 53 is thrown into the path of the crossbar 36 carried by the general operator and thereby forces the complement bar to travel forwardly. The complement bar 49 engages with any depressed pin of its associated pincarrying member of lowest denomination by meansof atab 54 forming an integral part of the complement bar. Referring to Figures 4 and 5, it will be seen that the plate 51 is pivotally mounted on studs 55 carried by bell-cranks 56 swingable on pins 57 fast to the bar 49. The bell-cranks 56 are operatively connected with a link 58, which imparts to the bell-cranks a parallel motion,

thereby, in turn, moving the plate-51 in parallel lines. In order that said plate 51 may be resiliently held in either effective or ineffective position, there is provided a spring 59 (Figure 6) fast to the bar 49, the spring being effective to hold a ball 60 in a hole in the complement bar in engagement with holes 61 in the plate 51.

According to certain features of this invention, mechanism is provided for setting the complement bar 49 to add one unit into the register wheel of lowest denomination when the machine is set for subtraction. To this end, the plate 51 is provided with a series of upwardlycxtending lugs 62, which lugs are normally between the pin-setting linkage bars 32, as shown in Figure 1, but are'moved into the path of the bars 32 when the complement bar is moved to pin-setting position, as shown in Figure 9, in which po sition the plate 51 is depressed by the action of any one of the bars 32 in setting a pin 31. The complement bar is advanced to pinsetting position upon actuation of any one of the pin-carrying members by means of mechanism which includes a bail-piece or universal bar 63 (Figures 3 to 9, 11 and 12) pivotally mounted on a shaft 64, said bailpiece being swung upon actuation of any of the transposing devices 29. Referring to Figure 3, it will be seen that the bail 63 is provided with end plates 65, one of the plates formed to extend upwardly and terminate with a finger 66 designed to engage a pin 67 fast to the complement bar. The bail 63 is normally held in its ineffective position by means of a spring 68 which holds it contacting at 69 with the transposing devices. It .will thus be seen that, upon actuation of any of the pin-carrying members, the complement bar will be moved to setting position, and then, when any one of the numeral-keys is operated to depress a corresponding pin in the pin-carrying members, the plate 51 will also be depressed, thereby forcing the heel 53 into the path of the cross-bar 36 carried by the general operator.

In order that the machine may be easily converted into a straight adding machine temporarily, that is to say, during one cycle of the machine, there is provided mechanism which includes a key 70 (Figure 3) which when actuated is effective to move a bar 71 rcarwardly to thereby disconnect, by means of a linkage hereinafter described, the bail 63 from the pin 67 The key 7 0 is provided with a pin 72, co-operating with a latch 73 which is effective to startthe motor and to lock the key in its operated position. The latch 73 has a cam-face 74 upon which the .pin 72 rides, thereby rocking the latch on a supporting pivot 75, the latch carrying. therewith an arm 76 which is provided at the end thereof with a pin 77, designed to engage amotor-trip bar 78. This mechanism is fully illustrated in my Patent No. 1,{152,162, dated April 17, 1923.

The mechanism provided for transforming the machine for straight addition includes a lever 79 (Figures 3 and 6), which is rockably mounted upon a fixed stud 80 and is operatively connected to the bar 71 by means of a screw 81. The lever 79 is held in its normal position by means of a spring 84, and is connectedto a reversing arm 82 by means of a link 83 which is operatively connected to the lever and to the arm by means of studs 85. The reversing arm 82 is swingably mounted at 86 and is provided with a finger 87 which engages the upper end of an arm 88 secured, by means of a screw 89, to a shaft 90. Said shaft .90 is journaled upon supporting brackets 91 and 92, and carries fast thereto an arm 93 which is slotted at 9st and engages a downwardly-extending portion 95. of one of the end plates of the bail 63.

Sometimes it may be desired to temporarily set the machine for straight addition, in

which case the actuation of the key prior to each computation would be objectionable, and, for this reason,.there is provided a finger-piece 96 fast to an upwardly-extending arm 97 which may form an integral part of the shaft 90. The fingerpiece 96 is normally held in the position shown in Figure 3 by means of a spring 98, which is held under tension by means of a collar 99 fast to the shaft and a front bracket 100 in which the shaft is jonrnaled. In this position the machine is set for coupon work, but, upon swinging the finger-piece 96 to the position shown in Figure 11, the bail 63' finger-piece by means of a spring 103. Said latch is releasable by means of another finger-piece 104.

In order to facilitate the sliding of the bail 63 into and out of engagementwith the pin 67, to thus render the complement bar operative or inoperative, there is provided mechanism for slightly moving the complement bar forwardly during the shifting of the bail 63. This mechanism includes a link which has a cam-face 106 designed to engage a pin 107 fast to the complement bar. The upper end of the link is slidably mounted in a supporting plate 108, and is mounted at its lower end upon a stud 109 carried by an arm 110 pivotally mounted at 111. The arm 110 is moved upwardly upon operation of the finger-piece 96, which is effective to swing the shaft 90 to thereby disengage the bail 63, and thus prevent the operation of the complement bar. The shaft 90 is provided with an arm 112 fast thereto by means of a screw 113, the arm 112 being operatively connected to the arm 110 by means of a link 114 pivotally mounted at 115. The operation of the link 105 is illustrated in Figures 12 and 13, the latter figure showing the actuated position, and showing the finger 66 away from the pin 67, the space therebetween being indicated'by the numeral 115. I

Sometimes the last digit of an amount representing the'coupon of largest denomination may be a 0, and in this case the complement bar will be operated in the regular way, but, due to the fact that the pincarrying member of lowest denomination has not been set, the tab 54 will not be effective to pick up and carry the pin-carrying member therewith. In order to guard against the inaccuracy which would result from this condition, said pin-carrying member of lowest denomination, which is indicated by the numeral 116, is provided with a projection 117 (Figures 9 and 12) extending into the path of the tab .54 which engages it when the complement bar is moved forwardly by the general operator. Said projection is positioned so that the complement bar will be effective to move the member 116 only one space. It will be understood that the projection 117 does not interfere with the normal operation of the machinewhen set for subtraction, for the reason that in subtraction the 9 pins are always set, and can only be released upon depression of a significant numeral-key.

The general operator is actuated either by means of a handle 118 (Figure 1) fast to a shaft 119, which is operatively connected to the general operator by means of a geared sector 120 and an intermediate gear 121', or by means of a motor,'not shown, which is connected to the general operator by means of a lug 122.

The pins in the pin-carrying members 30 and 116 are restored during the return movement of the general operator. To this end, there is provided a restoring platform 123 which is supported by bell-cranks 124 connected together by a link 125. Said bellcranks are actuated by a one-way tripping pawl 126, which idly rides. under a finger 127 fast to a shaft 128 during the forward movement of the general operator, but forces the finger upwardly during the return movement of the general operator. The shaft 128 carries fast thereto an arm 129 which engages the under side of the restoring platform to thereby force it upwardly in order to restore the pins. It will be understood that the restoring platform is also effective to restore the plate 51 by engaging the lower edge thereof.

Each of the pin-carrying members and wheels, however, only rotate when the rackmoves forward, and stand idle during the return movement of the rack. The relative movement of the wheels 131 is shown in Figures 9 and 10, the latter showing the pincarryingmember 116 being moved one space ahead of the set pin by means of the complement bar which is also actuated by the general operator. Said complement bar is held in its normal position, as shown in Figure 6, by means of a spring 133, which actuates between a stud 134,'fast to the bar 49, and the bar 36 of the general operator. It will be understood that when the plate 51 is not depressed, as occurs when the machine is set for straight'addition, by the shifting of the finger-piece 96 into the notch of the latch 101, the complement bar 49 does not immediately move forward with the general-operator because the tab 54 enters a clearancenotch 135 in the bar 36 to permit said tab to become flush with the edge of the general operator and restores the normal operation of the pin-bar 116 by the general operator.

From this description, it will beunderstood that the pin-bar of lowest denomination has a dual mode of operation, a normal operation for addition by the setting of any digit-pin to predetermine a value to be carried to an accumulator-wheel, and an ab-' normal additive operation by the setting of a pin of lowest denomination which operates to automatically present an interponent between any set-up pin on the bar and the general .operator to render said pin-bar operable to be picked up by the general operator a pin unit of distance in advance of the picking up of the set-up pins of any bar. of higher denomination and thus automatically run a unit of value into the register before the set-up pin-values are accumulated, or, in case the unit-value 1s a 0, said interponent becomes effective to add theextra unit after the pin set-up values have been registered; that the actuation of the key temporarily restores the mechanism for straight addition by swinging the arm 88 from the position of X to the position of Y, Figure 11, the swinging movement thereof being insuflicient to allow the latch 101 to lock the finger-piece 96, and hence the tripping of the bar 78 will release the key 70 and the universal bar63 will be restored to normal position; and that the finger-piece 96, when shifted to the position of Figure 11, willinterlock with the latch 101, and the arm 88 will swing to the Z position and permanently silence the vibration of the complement-bar by the tappet-actuated bail 63.

The mode of operation provides for a;

work-sheet, shown at Figure 14, where the character of the bond-coupons is typed in the first column, the carriage tabulated into the next column, and the computing mechanism. set for a state of subtraction, either automatically in the usual Underwood-Hanson manner by columnar means on the carriage, as fully shown and described in my prior patent of April 17, 1923, No. 1,452,162,- or by the actuation of the usual subtractionkey 37. The lowest numbered coupon in a stack of consecutively numbered coupons, as 375, is typed and run into the register subtractively, showing a negative or minus reading of 375. The cycling of the general operator by the bar 78 or the lever 118, restores the machine to an additive state.

Should this number have been incorrectly typed as 357, it is desirable to correct this mistake by additively running this number into the register to clear the wheels to 0. To this end, the carriage is restored to the position of the second column with the subconnections to an additive state.

The lowest coupon-number having been correctly retyped and negatively run into the register, the work-sheet is tabulated into the third column where the highest serial number of the stack of coupons is typed.

The typing of this high number, which may be 450, sets up pins of corresponding value upon the pin-bars 30 and 116. The typing of the unit, which in this case is a 0, does not depress the plate 51. Hence, when the general operator 35 is moved forwardly, the tab 54 will enter the clearancegap 135 in they cross-bar 36 and become inoperative to add the extra unit of the pin distance to the bar 116 until just in advance of the end of the forward movement of the bar 36, when the tab 54 will engage the special lug or projection 117, whereupon the pin-bar 116 will be moved one unit of distance, oneunit of value will be automatically added to the accumulator-wheel of lowest denomination, and the reading of the register will disclose a positive 76, as the result of the computation. The work-sheet may now be tabulated to the last or fourth column, the mechanism set to subtraction, the 76 typed, and the machine cycled to clear the register and condition the machine to re eat the operation for the next batch of serially numbered coupons.

cycle the machine and restore the computing Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a computing machine having a register with denominational dial-wheels, numeral-keys, denominational pin-carrying members associated with said dial-wheels, means controlled by said keys for setting pins in said pin-carrying members, and means for controlling the setting of a computing mechanism for addition or complementary subtraction, a coupon-counting mechanism including a complementary bar associated with the dial-wheel of lowest denomination for adding an extra unit in said last-mentioned dial-wheel, said complementary bar: being automatically rendered effective when the mechanism is set for subtraction but being manually settable to be either effective or ineffective when the mechanism is set for addition. I 2. In a register having denominational dial-wheels, and denominational computing bars therefor, a coupon-counting mechanism including an auxiliary computing bar cooperating with the computing bar of lowest denominational order to add one unit to the dial-wheel of lowest denominational order during an adding operation.

3. In a register including denominational dial-wheels, denominational computing bars associated with the dial-wheels, numeralkeys, indexing devices controlled by said keys, and an auxiliary computing bar, a coupon-counting mechanism including means carried by said auxiliary computing bar, said means being settable by the numeral-keys in a manner to cooperate with the computing bar of lowest denominational order to add one unit to the dial-wheel of lowest de-- 4. In a register including denominational.

dial-wheels, settable indexing devices associated with said dial-wheels, numeral-keys for setting said indexing devices, and a computing bar, a coupon-counting mechanism including means co-operating with the indexing device of lowest denominational order and settable to its efiective position by any one of the numeral-keys to thus cause one unit. to be added to the dial-wheel of lowest denominational order during an adding operation. I

5. In a computing mechanism having a register with denominational dial-wheels, denominational computing elements associated therewith, numeral-keys for setting pins carried by said computing elements, a general operator to engagethe set pins on said computing elements to actuate the denominational dial-wheels, and a computing bar adjacent the computing elements, a

having settable indexing devices, and nu-v meral-keys for operating said devices, a coupon-counting mechanism including means settable concomitantly with the actuation of any one of the settable devices and operative to cause one unit to be added to thecomputing dial-wheel of lowest denominational order during an adding 0 eration.

7. In a typewriting an computing .ma-

chine having a computlng register, numeralkeys, a subtracting mechanlsm, an addlng mechanism, denominational computlng bars,

and an auxiliary bar arranged adjacent the computing bar of lowest denominational order, a coupon-counting mechanism including a device settable on said auxiliary bar for co-operating with the computing bar of lowest denominational order to run a unit of the lowest denominational order into the register, said device being normally ineffective, means connected to the subtracting mechanism to render said auxiliary bar effective, and means operable by said numeral-keys during an addition operation. to render said auxiliary bar efiective to add an extra unit.

8. In a typewriting and computing machine having. a computing register, a subtracting mechanism, adding mechanism, computing elementsassociated'with "said register, an auxiliary computing element, and a general operator, a coupon-counting mechanisin including a settable device on said auxiliary computing element, to be engaged by said general operator to drive said auxiliary computing element to cause thelatter to co-operate with the computing element of lowest denominational order to run a unit of the lowest denominational order into the register during an adding operation.

9. In a typewriting and computing mamechanism including a register and denominational computing elements therefor, each computing element having a set of indexing devices, numeral-key-operated elements for selectively setting the indexing devices, an auxiliary computing element arranged adjacent, the units computing element, and a general operator, a coupon-counting mechanism including a device on said auxiliary computing element settable by any one of said key-operated elements during an adding operation, to be picked up by the general operator and thereby drive said auxiliary computing element and to 115 ch ne having an adding and subtracting cause it to pick up the set indexing device of the units computing element and run an extra unit of lowest denominational order into the register during an adding operation.

10. In a typewriting and computing mechanism havlng a register with denominational dial-wheels, denominational computing bars, and an auxiliary bar, numeralkeys, :1 coupon-counting mechanism including a device on said auxiliary bar settable by any .one of said numeral-keys, and operable to move the computing bar of lowest denominational order oneunit of distance in advance of the other computing bars, to run an extra unit of the lowest denominational order into the register during an adding operation. a

11. In .a typewriting and computing mechanism having a traveling tappet-bar, adding mechanism including a register, denominational computing bars having indexing pins, an auxiliary bar, numeral-keys, a couponcounting mechanism including a device on said auxiliary bar settable by said numeralkeys, means controlled by a tappet for moving the auxiliary bar and said device to a setting position, and means operatively connected for automatically setting said device upon operation of the numeral-keys, the setting of said device being effective to run into the register a unit of lowest denominational order. 4 12. Ina typewriting and computing mechanism having numeral-keys and a register including dial-wheels, a coupon-counting mechanism including means settable by any one of said keys and operatively connected to effect, during an addition operation, the

- running of an extra unit into the dial-wheel of lowest denominational order.

13. In a typewriting and computing mechanism having mechanism for additively computing amounts, a register having com puting pin-bars, numeral-keys for setting said plns, and a general operator for actuatmg said computing pin-bars. a coupon-counting mechanism including means for automatically adding a unit of lowest denominational order into the register, said means including a complement bar adjacent the computing pin-bar of lowest denominational order and operatively conncctible therewith to move said last-mentioned computing pinbar one step in advance of the general operator during an adding operation.

14. In a typewriting and computing mechanism for additively computing amounts including a register, computing pin-bars, numeral-keys for setting the pins, and a general operator for actuating said computing pinbars, a coupon-counting mechanism including means for automatically adding a unit of lowest denominational order into the regis ter, said means including a complement bar having a slide settable by the numeral-keys,

the general operator engaging said slide to move the complement bar therewith, said complement bar being provided with a tab designed to engage the depressed pin in the computing bar of lowest denominational order in a manner'to move said bar one step in advance of the general operator when the slide is set to engage the general operator.

15. In a typewriting and computing mechanism having adding and complementary subtracting mechanism including a register, denominational pin-bars, numeral-keys, and a general operator, a coupon-counting mechanism including a complement bar for automatically adding a unit of lowest denominational order when the machine is set for addition or when the machine is set for subtraction, and manually-operated means for preventing the automatic addition of said unit when the machine is set for addition.

16. In a typewriting and computing mechanism havingadding and complementary subtracting mechanism including aregister, denominational pin-bars, numeralkeys, and a general operator for advancing said bars, a coupon-counting mechanism including a complement bar for automatically adding a unit of lowest denominational order, having a slide rockably mounted thereon to be moved into the path of'the general operator, means independent of the numeral-keys for moving the slide into the path of the generaloperator when the com- 17. In a typewriting and computing 'mechanism having adding and complementary subtracting mechanism including a reg ister, denominational pin-bars, numeral keys for setting the pins, and a general operator for advancing said pin-bars, a coupon-counting mechanism including a complementbar operatively conncctible for automatically adding a unit to the wheel of lowest denominational order. said complement bar having a slide rockably mounted thereon to be moved into the path of the general operator, means independent of the numeral-keys for moving the slide in the path of the general operator when the computing mechanism is set for subtraction, and means controlled by said numeral-keys for moving the slide into the path of the general operator when the coupon-counting mechanism is operative for addition, said slide having projections designed to engage with the pin-setting means only upon movement of any denominational bar to pin-setting position.

18. In a typewriting and computing mechanism having adding and complementary subtracting mechanism including a puting mechanism is set for subtraction,-

register, denominational pin-bars therefor, numeral-keys for setting the pins, and a general operator for advancing said pin-bars, a coupon-counting mechanism including a complement bar. operatively connectible for automatically adding a unit of lowest denominational order, said complement bar having a slide rockably mounted thereon to be moved into the path of the general operator,

means independent of the numeral-keys for moving the slide into the path of the general operator when the computing mechanism is set for subtraction, means controlled by said numeral-keys for moving the slide into the path of the general operator when the coupon-counting mechanism is operative for additionfsaid'slide having projections designed to engage with the pin-setting means only upon movement of any denominational bar to pin-setting position and manuallycontrollable means for preventing the actuation of the complement bar upon operation of the general operator, to thereby prevent the setting of the slide and in turn preventincluding a complement bar co-operative with the denominational bar of lowest denominational order in a manner to add one unit of lowest denominational order to the register upon operation of the general operator, said vcomplement bar having a settable slide, bell-cranks upon which the slide is pivotally mounted, and a parallelogrammatic link operatively connecting said bellcranks to impart to the slide a parallel up-and-down motion. g

21. The combination with a computing mechanism having a register and means for additively computing amounts in said register, of a coupon-counting mechanism innominational order into said register, manually-operable means for rendering said automatic means ineffective, and means for restoring the automatic means to its effective position after each computation.

23. In a computing mechanism having a register with computing bars, and for operating the computing bars, the computing mechanism being normally set to additively compute, a-coupon-counting mechanism including an auxiliary computing bar co-operative with the computing bar of lowest denominational order to automatically add a unit of value greater than the computing value of said bar into said register, said auxiliary computing bar being settable upon actuation of any one of the keys but being restored to its ineflective position upon operation of the general operator.

24. In a computing machine having a register with denominational dial-wheels, numeral-keys and means controlled by said keys for effecting an adding operation, a coupon-counting mechanism including a complement bar, connected to said adding means, for automatically adding an extra unit of lowest denomination to said dialwheels during an adding operation.

25. In a computing mechanism having a register with computing bars, and a general operator for operating said computing bars, the computing mechanism being normally set to additively compute, a coupon-counting mechanism including an' auxiliary computingbar co-operative with the computing bar of lowest denominational order to automatically add a unit of value greater than the computing value of said bar into said register during an adding operation.

ADOLPH o. KUPETZ. 

